cros: Add a header for gaia auth requests.

chrome/browser/chromeos/login/webui_login_view.h

Index: chrome/browser/chromeos/login/webui_login_view.h
diff --git a/chrome/browser/chromeos/login/webui_login_view.h b/chrome/browser/chromeos/login/webui_login_view.h
index 669626a6146da17e606df2fe93e033f4b9912655..c5efe82469e95dc33bb4ac13b594482d084d9d3c 100644
--- a/chrome/browser/chromeos/login/webui_login_view.h
+++ b/chrome/browser/chromeos/login/webui_login_view.h
@@ -8,6 +8,7 @@
 #include <map>
 #include <string>
 
+#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/ui/views/unhandled_keyboard_event_handler.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
@@ -106,6 +107,10 @@ class WebUILoginView : public views::View,
   // Map type for the accelerator-to-identifier map.
   typedef std::map<ui::Accelerator, std::string> AccelMap;
 
+  // A class to load gaia auth extension on construction and unload it on
+  // destruction.
+  class ScopedGaiaAuthExtension;
+
   // Overridden from content::WebContentsDelegate.
   virtual bool HandleContextMenu(
       const content::ContextMenuParams& params) OVERRIDE;
@@ -157,6 +162,8 @@ class WebUILoginView : public views::View,
   // True to forward keyboard event.
   bool forward_keyboard_event_;
 
+  scoped_ptr<ScopedGaiaAuthExtension> gaia_auth_;
+
   DISALLOW_COPY_AND_ASSIGN(WebUILoginView);
 };